Reports

Evidence for Sediment Eruption on Deep Sea Floor, Gulf of Mexico

Science  27 Jan 1989:
Vol. 243, Issue 4890, pp. 517-519
DOI: 10.1126/science.243.4890.517

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Abstract

A large crater has been discovered on the sea floor, Gulf of Mexico, in a water depth of 2176 meters. Deep-tow high-resolution imagery shows that the crater is cut into a low hill surrounded by near-surface concentric faults. Approximately 2 million cubic meters of ejected sediment forms a peripheral debris field. The low hill and faults may be related to mud diapirism or intrusion of gas hydrates into near-surface sediments. A recent eruption evacuated sediments from the crater, apparently because of release of overpressured petrogenic gas.